Abstract

VALDES-RESTREPO, Magda Piedad  and  ORTIZ-GRISALES, Sanin. Forage and starch quality in 10 sweet potato clones Ipomoea batatas (L.) Lam. rev.udcaactual.divulg.cient. [online]. 2021, vol.24, n.2, e1580.  Epub Dec 06, 2021. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v24.n2.2021.1580.

The sweet potato Ipomoea babatas (L.) Lam., is a manifestation of the wild and cultivated Neotropical biodiversity, characterized by leaves with value as forage and starchy tubers, it is the object of research for its wide use and importance in tropical and subtropical regions, for its nutritional properties and contribution energy, becoming an essential resource for food security. The agronomic yield was evaluated in relative forage value (RFV), yield, and starch quality in sweet potato tubers. 10 clones selected for high dry matter in tubers were evaluated, with a randomized complete block design with 3 repetitions and 6 plants per repetition. Clone 440-078 stood out with an RFV of 133.07 and due to its high performance in tubers, clones 440-656 and 440-621, considered as promising materials for tuber quality, the latter presented the highest tuber weight in the three identified categories A, B, and C. The Tainung-66 clone is positioned in first place with -1.53 ISP associated with low fiber values (28.9 and 20.25 of NDF and ADF respectively), which give it a gross tuber digestibility of 72 %. Significant differences (p <0.05) in starch plastering properties were determined, with superiority at clone 440-016 for its retrograde characteristics with 221 cP and the Tainug-66 clone for its stability taking into account the maximum viscosity (Vm) and the viscosity of the cold paste (VPF) with 730 cP and 738 cP respectively.

Keywords : Animal feeding; Agronomic evaluation; Functional foods; Plant breeding; Tubers.

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